Ricoh A156 User Manual

Table 8. Toner Supply Coefficient (%)
(
V
T
-V
TREF)
/0.0196
Supply Ratio (SP Mode Setting)
7% 15% 30% 60%
~ 0 0 0 0 0
1 ~ 3 7153060
4 ~ 515304560
6 ~ 730456060
8 ~ 60 60 60 60
For example, if the toner supply ratio is 15% and (V
T
-V
TREF
)/0.0196 is 4.5,
TSC is 30. This value is then used in the formula to determine the toner
supply clutch on time given at the start of this discussion. (See formula 1.)
This all means that, if the ID sensor reading indicated that the most recent
V
SP
pattern was relatively light, the toner supply clutch will stay on for
longer. (If V
SP
/V
SG
is higher,
∆
V
REF
is smaller [Table 7]. This means that
V
TREF
is smaller [Formula 2], leading to a larger V
T
-V
TREF
. So, for a
particular toner supply ratio, the TSC value will be higher [Table 8], so the
clutch stays on for longer [Formula 1].)
(2) Fixed Supply Mode
TSC [%] is fixed. It is selected with SP mode 2-208-003 as shown below.
Table 9. Toner Supply Coefficient (%)
SP2-208-003 Value
1234
TSC [%] 2 4 6 11
NOTE:
Default = 6%
The machine automatically switches to fixed supply mode if the ID or TD
sensor fail (see section 1.3.5.).
(3) TD Sensor Supply Mode
TSC [%] is determined as shown in Table 8 for detect supply mode.
However, the toner supply ratio and V
T
– V
TREF
are both determined in
different ways. In particular, the ID sensor output is ignored.
- Toner Supply Ratio -
The supply ratio is selected with SP2-208-002. The settings are 1 (7%), 2
(15%), 3 (30%), or 4 (60%). The default is 15%.
- V
T
– V
TREF
-
•
V
TREF
= V
TREF
at the moment that TD sensor supply mode was selected.
•
V
T
= Current TD sensor output
A156/A160/A162 2-16 STM

Ricoh A156 Specifications

General

Brand	Ricoh
Model	A156
Category	All in One Printer
Language	English